Expectations have risen at City following the Abu Dhabi United Group's takeover during the early weeks of the campaign.
Robinho was signed for a British transfer record fee, while Hughes also spent heavily during the January window in an attempt to improve his squad.
However, Hughes' future has come in for speculation following an inconsistent season which has seen City win just once away from home in the Premier League.
City's mental fortitude on their travels has been questioned, but Hughes is hoping Sunday's 1-1 draw at title contenders Liverpool will be a turning point.
Agenda"People have to see some of the stories about us for what they are," Hughes told the Manchester Evening News. "There are people out there, for whatever reason, with an agenda.
"The amount of negativity written about us is almost unbelievable. I have never known anything like it. But the only way we will turn that around is by having positive performances and positive results.
"That's what we had at Anfield on Sunday, but we must keep it going because there are people out there who want us to fail.
"We have to understand that is where we are at and we will just keep working hard with a group of players who are determined to succeed."
New cultureHe added: "People, I think, expected us to be challenging almost immediately, but that was an impossibility.
"We are trying to impose a new culture right through the club and if you look at all the teams in and around the top six or seven they have been together for a substantial amount of time and we are still very early in our development.
"We recognise that, but maybe some people don't, or don't want to recognise it. They don't want to give us any credit and we understand that there are people out there who don't particularly want us to be successful in the future. We have to live with that and work with it in the short term because on occasions we will disappoint ourselves and our fans.
"I think we saw on Sunday that we have the makings of a good team. We have just got to be strong and take any valid criticism that comes our way in our stride. All the other rubbish that is written or broadcast we can ignore."